Annotation of sys/arch/i386/i386/procfs_machdep.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: procfs_machdep.c,v 1.6 2006/12/20 17:50:40 gwk Exp $ */
! 2: /* $NetBSD: procfs_machdep.c,v 1.6 2001/02/21 21:39:59 jdolecek Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2001 Wasabi Systems, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * Written by Frank van der Linden for Wasabi Systems, Inc.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed for the NetBSD Project by
! 21: * Wasabi Systems, Inc.
! 22: * 4. The name of Wasabi Systems, Inc. may not be used to endorse
! 23: * or promote products derived from this software without specific prior
! 24: * written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
! 27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
! 30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 36: * POSSIBILITY OF SUCH DAMAGE.
! 37: */
! 38:
! 39:
! 40: #include <sys/param.h>
! 41: #include <sys/systm.h>
! 42: #include <sys/mount.h>
! 43: #include <sys/vnode.h>
! 44: #include <miscfs/procfs/procfs.h>
! 45: #include <machine/cpu.h>
! 46: #include <machine/cpufunc.h>
! 47: #include <machine/specialreg.h>
! 48:
! 49: extern int i386_fpu_present, i386_fpu_exception, i386_fpu_fdivbug;
! 50:
! 51: static const char * const i386_features[] = {
! 52: "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
! 53: "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
! 54: "pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
! 55: "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe"
! 56: };
! 57:
! 58:
! 59: /*
! 60: * Linux-style /proc/cpuinfo.
! 61: * Only used when procfs is mounted with -o linux.
! 62: *
! 63: * In the multiprocessor case, this should be a loop over all CPUs.
! 64: */
! 65: int
! 66: procfs_getcpuinfstr(char *buf, int *len)
! 67: {
! 68: int left, l, i;
! 69: char featurebuf[256], *p;
! 70:
! 71: p = featurebuf;
! 72: left = sizeof featurebuf;
! 73: for (i = 0; i < 32; i++) {
! 74: if ((cpu_feature & (1 << i)) && i386_features[i]) {
! 75: l = snprintf(p, left, "%s ", i386_features[i]);
! 76: if (l == -1)
! 77: l = 0;
! 78: else if (l >= left)
! 79: l = left - 1;
! 80: left -= l;
! 81: p += l;
! 82: if (left <= 0)
! 83: break;
! 84: }
! 85: }
! 86:
! 87: p = buf;
! 88: left = *len;
! 89: l = snprintf(p, left,
! 90: "processor\t: %d\n"
! 91: "vendor_id\t: %s\n"
! 92: "cpu family\t: %d\n"
! 93: "model\t\t: %d\n"
! 94: "model name\t: %s\n"
! 95: "stepping\t: ",
! 96: 0,
! 97: cpu_vendor,
! 98: cpuid_level >= 0 ? ((cpu_id >> 8) & 15) : cpu_class + 3,
! 99: cpuid_level >= 0 ? ((cpu_id >> 4) & 15) : 0,
! 100: cpu_model
! 101: );
! 102: if (l == -1)
! 103: l = 0;
! 104: else if (l >= left)
! 105: l = left - 1;
! 106:
! 107: left -= l;
! 108: p += l;
! 109: if (left <= 0)
! 110: return 0;
! 111:
! 112: if (cpuid_level >= 0)
! 113: l = snprintf(p, left, "%d\n", cpu_id & 15);
! 114: else
! 115: l = snprintf(p, left, "unknown\n");
! 116:
! 117: if (l == -1)
! 118: l = 0;
! 119: else if (l >= left)
! 120: l = left - 1;
! 121: left -= l;
! 122: p += l;
! 123: if (left <= 0)
! 124: return 0;
! 125:
! 126: #if defined(I586_CPU) || defined(I686_CPU)
! 127: if (cpuspeed != 0)
! 128: l = snprintf(p, left, "cpu MHz\t\t: %d\n",
! 129: cpuspeed);
! 130: else
! 131: #endif
! 132: l = snprintf(p, left, "cpu MHz\t\t: unknown\n");
! 133:
! 134: if (l == -1)
! 135: l = 0;
! 136: else if (l >= left)
! 137: l = left - 1;
! 138: left -= l;
! 139: p += l;
! 140: if (left <= 0)
! 141: return 0;
! 142:
! 143: l = snprintf(p, left,
! 144: "fdiv_bug\t: %s\n"
! 145: "fpu\t\t: %s\n"
! 146: "fpu_exception:\t: %s\n"
! 147: "cpuid level\t: %d\n"
! 148: "wp\t\t: %s\n"
! 149: "flags\t\t: %s\n",
! 150: i386_fpu_fdivbug ? "yes" : "no",
! 151: i386_fpu_present ? "yes" : "no",
! 152: i386_fpu_exception ? "yes" : "no",
! 153: cpuid_level,
! 154: (rcr0() & CR0_WP) ? "yes" : "no",
! 155: featurebuf);
! 156: if (l == -1)
! 157: l = 0;
! 158: else if (l >= left)
! 159: l = left - 1;
! 160:
! 161: *len = (p + l) - buf;
! 162:
! 163: return 0;
! 164: }
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